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Table 1 Clinical characteristics of the cohort at baseline

From: Vitamin D supplementation in systemic lupus erythematosus: relationship to disease activity, fatigue and the interferon signature gene expression

Characteristics

Values

Age, mean (S.D.) years

47.9 (13.7)

Female sex, n/N (%)

28/31 (90.3)

Caucasian race, n/N (%)

30/31 (96.8)

Disease duration, mean (S.D.) years

14.1 (8.0)

Age of SLE onset, mean (S.D.) years

33.8 (13.5)

BMI, mean (S.D.) kg/m2

29.8 (8.1)

Osteopaenia/osteoporosis, n/N (%)

8/31 (25.8)

Anti-phospholipid syndrome, n/N (%)

3/31 (9.7)

Current prednisolone, n/N (%)

7/31 (22.6)

Current hydroxychloroquine, n/N (%)

18/31 (58.1)

Current azathioprine, n/N (%)

5/31 (16.1)

Current methotrexate, n/N (%)

4/31 (12.9)

Current calcium supplementation, n/N (%)

11/31 (35.5)

Current vitamin D supplementation, n/N (%)

11/33 (35.5)

SLEDAI-2K, median (range)

4 (0–11)

SDI, median (range)

0 (0–3)

  1. Frequencies and percentages describe categorical variables, while measures of central tendency and dispersion describe continuous variables. The mean and standard deviation are used for normally distributed variables, while the median and range are used for non-normally distributed variables